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Custom test
Problems
#
Name
101E
Candies and Stones
divide and conquer
,
dp
2500
x477
101D
Castle
dp
,
greedy
,
probabilities
,
sortings
,
trees
2300
x671
101C
Vectors
implementation
,
math
2000
x684
101B
Buses
binary search
,
data structures
,
dp
1700
x2494
101A
Homework
greedy
1200
x3704
100J
Interval Coloring
*special problem
,
greedy
,
math
2400
x60
100I
Rotation
*special problem
,
geometry
,
math
1500
x340
100H
Battleship
*special problem
,
dfs and similar
,
implementation
2100
x74
100G
Name the album
*special problem
,
data structures
,
implementation
1800
x109
100F
Polynom
*special problem
,
implementation
1800
x132
100E
Lamps in a Line
*special problem
,
math
1600
x266
100D
World of Mouth
*special problem
,
strings
1500
x297
100C
A+B
*special problem
,
implementation
1400
x514
100B
Friendly Numbers
*special problem
,
implementation
1500
x534
100A
Carpeting the Room
*special problem
,
implementation
1100
x884
99B
Help Chef Gerasim
implementation
,
sortings
1300
x2895
99A
Help Far Away Kingdom
strings
800
x6514
98E
Help Shrek and Donkey
dp
,
games
,
math
,
probabilities
2700
x443
98D
Help Monks
constructive algorithms
2500
x179
98C
Help Greg the Dwarf
geometry
,
ternary search
2500
x300
98B
Help King
implementation
,
probabilities
,
trees
2200
x114
98A
Help Victoria the Wise
brute force
,
implementation
1700
x1168
97E
Leaders
dfs and similar
,
dsu
,
graphs
,
trees
2200
x370
97D
Robot in Basement
bitmasks
,
brute force
,
implementation
2700
x237
97C
Winning Strategy
binary search
,
graphs
,
math
,
shortest paths
2400
x297
97B
Superset
constructive algorithms
,
divide and conquer
2300
x803
97A
Domino
brute force
,
implementation
2400
x250
96B
Lucky Numbers (easy)
binary search
,
bitmasks
,
brute force
1300
x14448
96A
Football
implementation
,
strings
900
x149208
95E
Lucky Country
dp
,
dsu
,
graphs
2500
x1389
95D
Horse Races
dp
,
math
2500
x414
95C
Volleyball
shortest paths
1900
x2671
95B
Lucky Numbers
dp
,
greedy
1800
x1178
95A
Hockey
implementation
,
strings
1600
x1643
94B
Friends
graphs
,
implementation
,
math
1300
x4493
94A
Restoring Password
implementation
,
strings
900
x10148
93E
Lostborn
dp
,
math
,
number theory
2600
x434
93D
Flags
dp
,
math
,
matrices
2500
x334
93C
Azembler
brute force
,
implementation
2500
x410
93B
End of Exams
greedy
1900
x897
93A
Frames
implementation
1700
x1910
92B
Binary Number
greedy
1300
x4706
92A
Chips
implementation
,
math
800
x18212
91E
Igloo Skyscraper
data structures
,
geometry
2500
x585
91D
Grocer's Problem
constructive algorithms
,
graphs
,
greedy
2600
x260
91C
Ski Base
combinatorics
,
dsu
,
graphs
2300
x862
91B
Queue
binary search
,
data structures
1500
x6515
91A
Newspaper Headline
greedy
,
strings
1500
x3451
90B
African Crossword
implementation
,
strings
1100
x5158
90A
Cableway
greedy
,
math
1000
x4507
89E
Fire and Ice
greedy
2900
x97
89D
Space mines
geometry
2500
x228
89C
Chip Play
brute force
,
data structures
,
implementation
2300
x609
89B
Widget Library
dp
,
expression parsing
,
graphs
,
implementation
2300
x510
89A
Robbery
greedy
1800
x1451
88B
Keyboard
implementation
1500
x4363
88A
Chord
brute force
,
implementation
1200
x3737
87E
Mogohu-Rea Idol
geometry
2600
x548
87D
Beautiful Road
dfs and similar
,
dp
,
dsu
,
graphs
,
implementation
,
sortings
,
trees
2300
x845
87C
Interesting Game
dp
,
games
,
math
2000
x1306
87B
Vasya and Types
implementation
,
strings
1800
x1109
87A
Trains
implementation
,
math
1500
x5175
86E
Long sequence
brute force
,
math
,
matrices
2700
x179
86D
Powerful array
data structures
,
implementation
,
math
,
two pointers
2200
x12525
86C
Genetic engineering
dp
,
string suffix structures
,
trees
2500
x682
86B
Tetris revisited
constructive algorithms
,
graph matchings
,
greedy
,
math
2200
x401
86A
Reflection
math
1600
x1341
85E
Guard Towers
binary search
,
dsu
,
geometry
,
graphs
,
sortings
2600
x918
85D
Sum of Medians
binary search
,
brute force
,
data structures
,
implementation
2300
x1907
85C
Petya and Tree
binary search
,
dfs and similar
,
probabilities
,
sortings
,
trees
2200
x522
85B
Embassy Queue
data structures
,
greedy
1800
x957
85A
Domino
constructive algorithms
,
implementation
1300
x1757
84C
Biathlon
binary search
,
implementation
1700
x1586
84A
Toy Army
math
,
number theory
900
x14571
83E
Two Subsequences
bitmasks
,
dp
2800
x453
83D
Numbers
dp
,
math
,
number theory
2400
x820
83C
Track
graphs
,
greedy
,
shortest paths
2400
x401
83B
Doctor
binary search
,
math
,
sortings
1800
x1615
83A
Magical Array
math
1300
x6073
82E
Corridor
geometry
2600
x216
82D
Two out of Three
dp
2000
x1921
82C
General Mobilization
data structures
,
dfs and similar
,
sortings
2000
x799
82B
Sets
constructive algorithms
,
hashing
,
implementation
1700
x2017
82A
Double Cola
implementation
,
math
1100
x29448
81E
Pairs
dfs and similar
,
dp
,
dsu
,
graphs
,
implementation
,
trees
2700
x326
81D
Polycarp's Picture Gallery
constructive algorithms
,
greedy
2100
x631
81C
Average Score
greedy
,
math
,
sortings
1700
x1624
81B
Sequence Formatting
implementation
,
strings
1700
x1874
81A
Plug-in
implementation
1400
x10189
80B
Depression
geometry
,
math
1200
x4221
80A
Panoramix's Prediction
brute force
800
x49595
79E
Security System
math
2900
x118
79D
Password
bitmasks
,
dp
,
shortest paths
2800
x944
79C
Beaver
data structures
,
dp
,
greedy
,
hashing
,
strings
,
two pointers
1800
x1716
79B
Colorful Field
implementation
,
sortings
1400
x6806
79A
Bus Game
greedy
1200
x3978
78E
Evacuation
flows
,
graphs
,
shortest paths
2300
x527
78D
Archer's Shot
binary search
,
geometry
,
math
,
two pointers
2300
x301
78C
Beaver Game
dp
,
games
,
number theory
2000
x1801
78B
Easter Eggs
constructive algorithms
,
implementation
1200
x12736
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combine-tags-by-or
*combine tags by OR
2-sat
binary search
bitmasks
brute force
chinese remainder theorem
combinatorics
constructive algorithms
data structures
dfs and similar
divide and conquer
dp
dsu
expression parsing
fft
flows
games
geometry
graph matchings
graphs
greedy
hashing
implementation
interactive
math
matrices
meet-in-the-middle
number theory
probabilities
schedules
shortest paths
sortings
string suffix structures
strings
ternary search
trees
two pointers
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